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Finding the Fourth Proportional to 284,519.64, 392,645.07 and 157,203.48

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Solution

The fourth proportional to 284,519.64, 392,645.07 and 157,203.48 is: 216,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,519.64 : 392,645.07 = 157,203.48 : x
  2. Step 2: Convert to fraction form
    284,519.64/392,645.07 = 157,203.48/x
  3. Step 3: Cross multiply
    284,519.64x = 392,645.07 × 157,203.48
  4. Step 4: Simplify right side
    284,519.64x = 61,725,171,408.84
  5. Step 5: Solve for x
    x = 61,725,171,408.84/284,519.64
  6. Step 6: Final answer
    x = 216,945.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.